Stop-casting.



I. F. O'CONNOR.

STOP CASTING.

APPLICATION FILED SEPT. 2o, 191e.

Patented Jim. T, 1919.

W I TNESSES: UZ@

PPL ATTORNEY UNITED sTATEs PATENT oEEicE.

"JOHN F, OCONNOR, OF- CHICAGO, ILLINOIS, ASSIGNOR TO WILLIAM H. MINER, 0F

GHAZY, NEW YORK.

i STOP-CASTING.

Speocation of Letters Patent.

Patented Jan. 7, 1919.

Application led September 20, 1916. Serial No. 121,130.

To all whom 'it may concern:

Be' it known that I, JOHN F. OCoNNoR, .a citizen of the United States, residing at Chicago, inthe county of Cook and State of sto castings. n bjects of the invention are to provlde a stop casting Lfor railway draft riggings wherein the metal of the casting is of ,substantially uniform thickness throu olft and also free from T or other sections tlgi would produce unequal strains in thel cast' g or annealing operations.`

Other objects of vthe invention are to provide a stop casting of the type above outlined which may be cast without the use of cores and wherein great strength is provided against longitudinal and transverse strains, the latter result being obtained by a novel combination of vertical and horizontal con volutions. The invention is in the nature of an improvement on the structure shown in my prior Patents 829,728 ofAugust 28th,

lili 1906 and 862,932 of August 23rd, 1907.

`-i In the drawing forming a part of this specification Figure 1 is aside elevation of an improved stop casting embodying my invention. Fig. 2 is a horlzontal, longitudinal section taken on the line 2--2 of Fig. 1. And Figs. 3, 4, 5 and 6 are vertical sectional views taken on the lines 3-3, 4-4, 5-5 and 6 6, respectively, of Fig. 1.

In said drawing, the stop casting is shown as designed for a tandem gear land is provided with a front main stop 10, center post 11 forming front intermediate stop 12 and rear intermediate stop 13, and rear main stop 14. Limiting stops 15,16, 17 and 18 are provided in conjunction with the main stops 10, 12,13 and 14, respectively. The stops are formed by series of vertical convolutions or bends open to the outer or rearside of the castin as will beseen from the outline of the we of the metal in Fig. 2, the continuous dotted line 19 indicating the thickness of the metal which follows the contour of the stops. As will be understood, those vertical convolutions which form the stops proper are open to the back of the casting inwardl whereas the convolutions intermediate the stops are open toward the inner face or front of the casting, the convolutions being formed by bends inthe metal extending alternately and outwardly. v

In or er to provide the casting with great strength, the same is made with a series of horizontal bends or convolutions designated A, B, C, D and E. The upper and lower and central horizontal convolutions A, C and E are open toward the back of the casting,

- whereas the two intermediate horizontal convolutions B and D are open to the front or' the casting. As clearly appears from Figs. 1, 3, 4, 5 and 6, all of the horizontal convolutions extend the full length of the casting, The horizontal convolutions B and D cross all of the stops both main and. limiting, thus dividing the stops into what may be consideredthree sections. Where the horizontal convolutions B and D cross the stops, the metal is extended inwardly to orr'n'V or U 'shaped sections 20, 21 and 22, the sections 20-20 in the end stops being deeper than the sections 22 in the limiting stop, but not as deep as the sections 21 in the main stop. It'will be noted that' the vertical-portions of thehorizontal.convolutions B and D are in the back or outer plane of the casting and adapted to bear against the sill to which the casting adjacent thereto, which thus pro` vides an exceedingly strong casting to resist the blows imposed upon the stops, since the vertical walls or faces of the stops are braced by these `triangular sections.

From examination of Figs. 1, Lland 5, it will be apparent that the upper convolution A forms an upper guide for the followers between the stops since said convolution between the front ad rear main sto s is eX- tended outwardly beyond the gui ing surfaces 29--29 for thefollowers.

castlng is secured. Consequently, said por- By means of the arrangement of vertical and horizontal convolutions, above described, it will be noted that a casting of relatively great thickness is provided without producing any thick section of metal. Thus there.

in planes still farther removed from the hack plane of the casting, as for instance in the A outer faces of the'main and limiting stops, The outer faces of the stops are not inthe same plainev because ot the fact that it is desli-able` to make the center post 11 dee er than ythe end stops in order to form a ulcrum for the yoke' of the draft rigging when,

the yoke and draw bar are swung radially., It will be noted that all ofthe vertical and horizontal convolutions are open either to the front or back and that there. are no undercut surfaces whereby the .casting may be made without the uw or necessity of cores, thus minimizing the expense of o sting. It will also be noted that the meta is of uniform section throughout, thus eliminating casting strains and annealing strains, thereby minimizing the number of defective castings .due to imperfections in the casting and annealing operations. By the use of the horizontal convolutions, a great portion of the metal is placed in the form of horizontally extending webs, thus greatly strengthening the casting against buling and pulling shocks and atthey bowing or buckling laterally.

l claim t-f l y l. A stop casting t'or draft riggings consame time strengthening the casting against sisting of a web ofmetal havinga series ofA horizontal convolutions therein, some of said,l horizontal convolutions having veitically spaced portions thereof forming riveting areas in the outer plane'lof the casting, said convolutions having.` inwardly extending, angled `braces,intermediate said spaced portions, each of said braces consisting of integral portions of said convolutions forming substantially a V in horizontal section.

A stop casting for draft riggings having'a series of vertical .convolutions therein' forming stops, and a plurality of longitudinally extending convolutions, some of,

the horizontal convolutions extending v,reare wardly to 'the outer plano oi the casting to thereby form vertically` separated riveting areas, vthe portion ,of said horizontal convo-l.

lu'tions between the riveting areas being formed with inwardly extended angled braces of substantially V-shape in horizontal section, the latter being located within the stops. ,r l f f A stop .casting fordraft riggings? consisting of a web' of substantially uniform 4. A stop casting `for draft ri-ggings con-- sistingv of a web 'provided' with a seriesv of vertical'convolutions therein forming front, rear andfmiddle A'main' stops and limiting stops intermediate' the main` stops,Y the middle stop'being deeper thanthe end.stops, saideasting having also included therein-two horizontally extending convolutions open to the inner face of the castng,said horizontal vconvolutions extending from end .to end ot the castingand: crossing the stops, the lhorizontl convolutions ywithin the stopsfbeing provided .with inwardly 'extended angled braces .of substantially Vl-shape in horizontal section, said braces varying in depth accordingl to variations inthe ,depths of. the stops.

5. As an article of manufacture, va stop casting for draft riggings, having a web of substantially uniforln thickness throughout, saidweb being provided with a series ot' vertical bends extending alternately vinwardly and ,outwardlyto form main and limiting,

stops, the web of the casting being provided also ywlth al pair of grooves extending longi?.`

tudinally throughout .thelen'gthof the casting andacross said stops,..tho casting at Vthe. bottoms of said grooves being-adapted to.

bear against aldraft sill to whichthecasting is adapted to be secured, said grooves being located vabove andA below the center 4of the casting to thereby ,leayeithe centralportions ofl the outer 'faces of,v thev stops suitaiJe 'for bearing surfaces on. a level with the? cante?- linejof d raft., f i r .,In,w itness that l claim the. foregoing; I' have hereunto subscribed my n'jame this-l8th dayuot Sept., 1,916. Y 

